COM error creating BHO and APP

[spidy]

I created a BHO and implemented a protocol handler .
Now in BHO setSite method I am creating Protocol class factory and
then calling registernamespace in IInternetSession.

CComPtr<IClassFactory> m_spCF;
CComPtr<IInternetSession> spSession;
hr = CoInternetGetSession(0, &spSession, 0);
if (SUCCEEDED(hr))
{
m_spCF.CoCreateInstance(CLSID_ProtocolHandlerCF);
if(SUCCEEDED(hr))
{
hr = spSession->RegisterNameSpace(m_spCF, CLSID_NULL, L"http", 0,
0, 0);
}
}

This works fine but when I run it gives me error and IE exists.

Error is
---------------------------
Windows Internet Explorer
---------------------------
Internet Explorer cannot download fwlink/ from go.microsoft.com.

The application called an interface that was marshalled for a
different thread.

---------------------------
OK
---------------------------

AS per my understanding , BHO is launched by IE and APP is created by
BHO.

Both BHO and APP are in same dll. Is there any issue with this? Am I
doing something wrong..

[Igor Tandetnik]

spidy wrote:
> I created a BHO and implemented a protocol handler .
> Now in BHO setSite method I am creating Protocol class factory and
> then calling registernamespace in IInternetSession.
>
> CComPtr<IClassFactory> m_spCF;
> CComPtr<IInternetSession> spSession;
> hr = CoInternetGetSession(0, &spSession, 0);
> if (SUCCEEDED(hr))
> {
> m_spCF.CoCreateInstance(CLSID_ProtocolHandlerCF);
> if(SUCCEEDED(hr))
> {
> hr = spSession->RegisterNameSpace(m_spCF, CLSID_NULL, L"http", 0,
> 0, 0);
> }
> }
>
> This works fine but when I run it gives me error and IE exists.
>

> The application called an interface that was marshalled for a
> different thread.

URLMon doesn't follow COM rules and freely passes interface pointers
between threads. This only works as long as they are all direct
pointers. Somehow, you've gotten a proxy pointer in there, and the proxy
complains about being called from the wrong thread.

Say, what threading model is CLSID_ProtocolHandlerCF coclass registered
with? Not free-threaded, by any chance?
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925